US372214A - Inking apparatus for printing-machines - Google Patents

Description

`IlTKINGr APPARATUS FOR PRINTING MACHINE-S.

No. 372,214.V v y122122111221 061;. 25, 1887.

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G..P.PBNNBP.. INKING APPARATUS POR PRINTING MACHINES.

-No. 372,214. Patented Oct. 25, 1887. 'Twig MMM? I Cuovgm Y www?. I Y By @MM/ I f5 Ai Afro/mers NITED STATES PATENT EErcE.

GEORGE FENNER, OF NEW LONDON, CONNECTICUT.

INKlNG APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 372,214, dated. October 25, 1887.

Application filed May 27, 1886. Serial No. 203,447. (No model.) n

T 0 ZZ whom t may concern:

Be it known that l, GEORGE P. FENNER, a citizen of the United States, residing at New London, in the county of New London and State of Connecticut, have invented new and useful Improvements in lnking Apparatus for Printing-Machines, of which the following is a specification.

This invention relates to printingpresses, and has for its object to provide novel means for increasing the efficiency of such apparatus.

To such end the invention consists in the features of construction and combination of devices hereinafter described and claimed, reference being made to the accompanying drawings, in which- Figure l represents a side elevation ofa portion of a printing-press embodying my improvement. Fig. 2 is a transverse section in the plane ac x, Fig. 1. Fig. 3 is a detail view, on a larger scale than the preceding figures, ot' the gear-wheels for rotating the receiving, transmitting, and distributing-rolls, and illustrates their construction.

Similarletters indicate corresponding parts.

In the drawings, the letter A designates the im pression-cylinder ofa p rinting-press of wellknown construction, and B is the reciprocating type-bed which carries the form. Standards C C, secured to the main frame of the press, support the ink-formt D,and also afford bearings for the several rolls.

E E are form-rolls, which are properly situated to come into contact with the type as the bed reciprocates.

F is the fount-roll, and F is the duct-roll, which is oscillated, by means hereinafter described, to come alternatelyin contact with the forint-roll F and a receiving-rolhC. A distributing-roll, H, is in contact with the form-rolls E E, and the ink is transmitted to the same from the receiving-roll G by an intermediate roll, l, which is in contact with both the said rolls.

The rolls E, F, G, II, and I are mounted, respectively, on shafts e, f, g, h, and i, having bearings in the standards C C, and the receivl tion of their lengths by means tol be presently described.

The main object of my invention is to uniformly distribute the ink on the` rolls, and consequently to the type, which object I accomplish by gearing together the receiving, transmitting, and distributing rolls in such a manner that the superficial velocity of their contact-peripheries is different, thusA producing a drag of the surfaces. In other words, if the superficial velocity of the distributing-roll H is taken as a unit, that of the transmitting-roll is greater or less, and the velocity of the receiving-roll is greater or less than that of the transmitting-roll. With this variation in the superficial velocity of the contact-surfaces of the several rolls G H I it is Well to construct the same of iron, steel, or other hard metal which is smoothly turned, since composition or felt rolls are liable to be destroyed by the resulting friction between the surfacesin Contact. This variation of velocity between the rolls can be produced by employing gears of different diameter and number 0f teeth.

In the exampleshown in the drawings the three rolls are geared together by cog-wheels G' H I', the cog-wheels G and H being each provided with twenty teeth, while the cogwheel I has nineteen teeth. As the diameters of the rollsare alike, the superficial velocity of the distributing-roll H will be in a measure less than that of the transmitting-roll I, and likewise the superficial velocity of the receiving-roll G will be less than that of the transmitting-roll.

Motion is imparted to the gear H by a gearwheel, L, which meshes into the same and is engaged by a rack, L', secured to the reciproeating type-bed, whereby a reciprocating rotary movement of the rolls is obtained. The vibrating motion of the rolls G and H, previously spoken about, is imparted thereto as is pivotcd at m to a support secured to one of the standards, so that as the roll H is thrown in one direction the roll G is thrown in the opposite, and vice versa, whereby the distribution of ink is greatly improved. To oscillate the duct-roll F so as to bring it alternately in contact with the receiving-roll and the fount-roll, it is provided with bearings in two levers, N, (one on each side of the machinc,) which are mounted each on a shaft, a, that operates in the standards D, and to which an oscillating motion is imparted by a cam, a', Fig. 1, on the type-bed, or by any.

other means such as are usually employed for this purpose.

In printingmaehines where the various rolls are rotated by frictional contact and thereby moved with the same supcriicial velocity, the inl; is not distributed between the individual rolls with such equality as when the rotating surfaces act with a continual drag upon each other-that is to say, when there is a difference between the superficial velocity of such surfaceswthe distinction being this, that when the rolls rotate with the same superficial velocity the material of the same is merely pressed together as the elements of contact of the two peripheries move at the same speed; but when there is a difference in this respect the elements of contact move past each other toproduce amovi ng orfrictional contact of the surfaces, one on the other, whereby the ink is more thoroughly distributed. The vibration of the receiving and distributing rolls, in combination with the rolls geared together, as described, produces al1-increased result in regard to the effectiveness of the apparatus.

It is obvious that the transmitting-roll I can be omitted and the receiving-roll G brought directly in contact with the distributing-roll H; but a more efficient distribution is obtained by the use of an intermediate roll.

\Vhat Iclaim as new, and desire to secure by Letters Patent, is-

l. In an inking apparatus for printingpresses, the combination ofthe -ink-fount, the form-rolls, a roll, I, rolls for supplying ink to the same, and a distributing-roll, H, in contact with the roll I and the form-rolls E E, the said roll I and the distributing-roll having different superiieial velocities, substantially as described.

2. In au inking apparatus for printingpresses, the combination, with the ink-fount, the fouet-roll, the oscillating duet-roll, and the form-rolls, of the receiving-roll G,'the distributing-roll H, in Contact with the formrolls, the transmitting-roll I, in contact with the receiving and distributing rolls, the said receiving, transmitting, and distributing rolls having a different superficial velocity from their respective contact-rolls, and means, as described, foi-imparting an alternating reciprocating motion to the rolls G and H, substantially as and for the purpose set forth.A

The combination, with an ink-forint, a fount-roll, a duet-roll, and form-rolls, of a distributing-roll, H, in contact with the latter, a receiving-roll, G, and a transmitting-roll, I, in contact with the receiving-roll and the distributing-roll, the said transmittingroll I having a superficial velocity different from the superiicial velocities of the receiving and distributing rolls G H, substantially as described.

In testimony whereofIhavehereuntoset my hand and seal in the presence 0f two subscribing witnesses.

GEORGE J?. FENNER. s]

Vitnesses:

EDWARD T. BROWN, GEORGE CoLFAX.

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