US1791508A - Inking mechanism for printing machines - Google Patents

Description

Feb. l0, 1931. E. T. MORRIS INKING MECHANISM FOR PRINTING MACHINES Filed Aug. l1, 1928 Patented Feb. lil, i931 EBTAR) T-QMAS MORRIS, OF CATFORID, LONDON, ENGLAND, ASSGNOR T0 R.

CO., HC., Ol NEW' YORK, N. Y., CORPORATIN OF NEW YORK' Application iled August 11, 1928, Serial No. 298,999, and in Great Britain September 5, 1927.

rlhis invention relates to improvements in inking mechanism for use with printing machines in which the ink is supplied to the inking' cylinders from a plurality of conduits through which the ink is forced under pressure. rEhe conduits deli ler the ink to orifices which are arranged to extend across and closely adjacent the ink cylinder, these orifices being carried in a member which is generally known as the ink rail.

ln inking mechanism of this tjpe at present in common use, the first cylinder is so rotated that the freshly inked portion thereof is moved downwardly with respect to the member carrying` the orifices of the conduits, with the result that the ink has a tendency to be thrown off from the lowermost part of the cylinder. in order to overcome this defeet, there is usually provided a roller additional to the usual rollers and in Contact with the first cylinder at the lowermost point thereof.

It is an object of the present invention to provide an inking mechanism in which the first cylinder and the member carrying,` the orifices are so located relatively to each other that during rotation of the cylinder, the freshly inked portion thereof is moved upwardly away from the said member.

it is also an object of the invention t0 provide an inking mechanism of generally improved construction, whereby the mechanism will be simple, durable and inexpensive in I construction, as well as convenient, practical, 3b serviceable and eilicient in its use.

With the foregoing` and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the iuvention herein disclosed may be made within the scope of what is claimed without departting from the spirit of the invention.

The invention uhas been illustrated in its preferred embodiment in the accompanying drawing, wherein:

Figure l shows a diagrammatic view at a portion of a printing, machine with a portion of the inkingmechanism shownin section.

Figure 2 shows a fragmentary view partly in section of the inking mechanism andthe frame, as viewed in the direction of arrow 2 of Figure l.

Referring` now to the drawing, l1 indicates the frame work of a printing machine and the plate or form cj-,f'linder is indicated at 12. The iirst ink distributing` cylinder is indicated at 13, and second ink distributing cyiinder at 1li- An ink supply system of the pressure type is shown supported beneath the second ink distributing cylinder and within the confines of vertical lines tangent to its periphery at each side. lnk supply conduits are indicated at 15, and an ink rail at 16 having orifices, one of which is indicated at 16.

lnk is delivered from the orifices 16 on to the first ink cylinder 13 from which it is transferred by the roller 17, to the second ink cylinder lil, the roller 17 areferably being moved endwise or reciprocated. The rollers '18, 19, 2O and 21, also preferably reciprocated serve to distribute the ink evenly over the surface of the cylinder 1d from which it is transferred by the form rollers Q2 and 23 to the printing piates carried by the cylinder 12.

rlhe cylinders rotate in the direction indicated by the arrows, and it is apparent that ink deposited on the cylinder 13 which turns counter clockwise will be carried upward to the roller 17. Thus there will be no tendency for the ink to be thrown off the cylinder due to the attraction of gravity.

In order that the ink rail may be moved towards and away from the cylinder 13 for adjustment or cleaning purposes, it is slidably mounted on a guide 2e formed on the base of the machine, and is provided with a rack in mesh with a pinion 26 secured to the operating shaft 27. It will be understood that similar guides, racks and pinions are provided at each side of the machine. lt is apparent that by rotating the shaft 27, the ink rail can be moved away from or toward the cylinder i6.

The problem of preventing the discharge of the ink from the lower part of the ink cylinder has never heretofore been solved. Although placing of a roller below the cylinder has been found to be a great help, the herein disclosed method of overcoming the difficulty is the first solution to the problem that has been found.

What I claim is:

l. In a rotary printing machine, a form cylinder, a first inl: distributing cylinder, a second ink distributing cylinder below the form cylinder, means for rotating the cylinders, a first ink roller engaging theV first ink distributing cylinder and the second inl: distributing cylinder, a second ink roller engaging the second inlt distributing cylinder and the form cylinder, a pressure feed inking mechanism including an ink rail having a plurality of condits each connected to an ori fico in the rail, and means for supporting the ink mechanism with the orifices adjacent the periphery of the first ink distributing cylinder on its upwardly moving side and within the connes of vertical lines tangent toI the periphery of the second ink distributing cylinder and at each side thereof.

2. In a rotary printing` machine, a form cylinder, a first inl: distributing cylinder, aA second ink distributing cylinder below the form cylinder, means for rotating the cylinders, a .first ink roller engaging the first inlt distributing cylinder and the second ink c istributing cylinder, a second ink roller engaging the second inl; distributing cylinder and the form cylinder, a pressure feed inking mechanism including an ink rail having a plurality of conduits each connected to an o ifice in the rail, means for supporting the ink mechanism with the orifices adjacent the periphery of the rst ink distributing cylinder on its upwardly moving side and within the confines of verticallines tangent with the periphery of the second ink distributing cylinder and at each side thereof, and means for moving the inlring mechanism out of oper ating relation with the first inlr distributing cylinder to a position in which it is .accessible for inspection.

In testimony whereof, I affix my signature.

EDWARD THOMAS Monnis.

Images